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High accuracy fuel system

a fuel system and high-accuracy technology, applied in the direction of turbine/propulsion fuel valves, mechanical equipment, machines/engines, etc., can solve the problems of engine operation at less than optimal performance, uncertainty in the actual fuel delivered to the engine,

Pending Publication Date: 2021-09-16
HAMILTON SUNDSTRAND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a fuel device that includes a housing and a memory chip that includes data on the performance of the fuel device. The fuel device can be a fuel pump, metering unit, density meter, or flow divider valve. The device is connected to an electronic engine controller that controls it. The fuel system also includes a characterization device that sends data on the device to the engine controller. This allows for the fuel device to be replaced with another fuel device and still control the fuel flow through it. The technical effect of this patent is an improved fuel system with improved control over fuel flow and leakage detection.

Problems solved by technology

Today's typical fuel system accuracies generally fall in the 3-6% range, causing uncertainty in the actual fuel delivered to the engine.
Uncertainty results in engines being operated at less than optimal performance.

Method used

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Embodiment Construction

[0013]Reference will now be made to the drawings wherein like reference numerals identify similar structural features or aspects of the subject invention. For purposes of explanation and illustration, and not limitation, a partial view of an exemplary embodiment of a fuel system in accordance with the invention are shown in FIGS. 1 and 2, and are designated generally by reference character 100. The methods and systems of the invention can be used to improve fuel metering accuracy, by adding characterization devices to various fuel system components that contribute to an EEC's calculation of mass flow.

[0014]A fuel system's calculated flow is dependent on the data an Electronic Engine Controller (EEC) receives regarding the expectant conditions of the fuel and ambient conditions. The calculation of flow is a function of the pressure drop across an orifice of a device and the effective orifice area and density of the fuel flowing within or through that device. Specifically the expectan...

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PUM

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Abstract

A fuel device including a housing having at least one fuel channel configured to direct, meter, sense or pump fuel there through, and a characterization device coupled to the housing including a memory chip, wherein the memory chip includes measured performance data of the fuel channel.

Description

BACKGROUNDTechnological Field[0001]This disclosure relates to a fuel system, and particularly to an improvement of the calibration and metering flow accuracy of the fuel system.Description of Related Art[0002]A gas turbine engine's performance heavily depends on the ability of a fuel system to meter flow accurately. Fuel system mass flow accuracy depends on the difference between calculated flow and actual metered flow.[0003]The nominal relationship of a device's metering valve position to mass flow is stored on Electronic Engine Controller (EEC). System accuracy thus depends on the metering valve position sensor accuracy, metering window manufacturing tolerances, the accuracy of the pressure regulating valve and uncertainty of specific gravity of the fuel. Today's typical fuel system accuracies generally fall in the 3-6% range, causing uncertainty in the actual fuel delivered to the engine. Uncertainty results in engines being operated at less than optimal performance.[0004]Typical...

Claims

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Application Information

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IPC IPC(8): F02C9/26F02C7/232F02C9/28G01F1/86
CPCF02C9/263F02C7/232F02C9/28G01F1/86F05D2220/32F05D2270/301F05D2270/303F05D2270/306F05D2270/01F05D2260/12F05D2260/80F05D2270/802
Inventor RHODEN, WILLIAM E.REUTER, CHARLES E.
Owner HAMILTON SUNDSTRAND CORP